GATE | Gate IT 2008 | Question 27

Consider the following Hasse diagrams.


Which all of the above represent a lattice?
(A) (i) and (iv) only
(B) (ii) and (iii) only
(C) (iii) only
(D) (i), (ii) and (iv) only

Answer: (A)

Explanation: A hasse diagram will be lattice when every pair of element have at least upper bound and greatest lower bound.

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